Jawa 500 OHV "Rumpal"


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Manufacturer Factory ing. Janecek Praha-Nusle II, licence Wanderer
Year of manufacture 1932
Engine 1-cylindered 4-stroke
Cooling air cooling
Crankshaft pressed, forged, stored on roller bearings
Cylinder bore diameter 84 mm
Stroke 90 mm
Cylinder capacity 498,7 ccm
Compression ratio 5:1 (6:1 on request)
Engine output 18 HP (13,2kW)
Torsional moment (rpm) -
Distribution OHV
Lubrication forced circulation-system
Valve arrangement OHV - vertically
Carburetter Amal - 2-gate-valved
Ignition magdynamo Bosch
Clutch disk friction clutch
Gearbox 3-speed
Primary transmission common shaft
Secondary transmission propeller shaft
Gear shifting hand-operated on the left side, directly on the gearbox
Front wheel suspension blade spring
Rear wheel suspension rigid frame
Steering with shock absorber
Front wheel brake drum brake
Rear wheel brake cardan-transmission brake (foot-operated)
Weight 175 kg
Carrying capacity 180 kg
Wheelsī distance 1360 mm
Clearance height 124 mm
Seat height 720 mm
Overall width 880 mm
Overall length 2100 mm
Max. height 1000 mm
Frame pressed of steel plate
Fuel consumption 4-5 l / 100 km
Oil consumption 0,2 l / 100 km
Fuel tank capacity 15 l
Oil tank capacity 1,5 l
Top speed 95-100 km/h
Climbing ability -
Seats 1 (+1)
Contemporary price 12 000 - 17 000 Czech Crowns
Front wheel spoke wheel 19"(27x4,00)
Rear wheel spoke wheel 19"(27x4,00)
Rims 3,25x19"
Tyres 4,00x19"
Notice 1016 - 1017 motorcyles were manufactured between 1929 and 1931. Up to serial number 1000 the motorcycles were equipped with a tube-fork with short straight arms.

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